Release 20190915 - Hotfix 2

Fixes issues related to documentation and package generation:

• Installed library through pip was not working due the lack of sub-modules explicitly listed in setup.py.
• New long description in the package copied from the README (AKA, visible in https://pypi.org/project/tropescraper/)
• Improved README.

Release 20190915

Release notes:

This version is cleaner, automatically tested, more reliable and more maintainable.

Includes:

• redesign of classes according to Clean Architecture.
• refactor of the code according to Clean Code.
• better test coverage of the three adaptors:
  • file-based cache.
  • web page parser.
  • web page retriever.

Updated in PyPI: https://pypi.org/project/tropescraper/

Release 201907

Merge pull request #2 from JJ/master

Some changes in docs and file name